Grenoble, France
Surieux - Improving environmental efficiency of urban energy supply systems
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The project is 505 dwellings retrofit program in an area named “Surieux”
situated in Echirolles, an inner suburb of Grenoble, France. The project was
lead by the OPAC 38, a social housing association which owns about 21,000
dwellings. The demonstration project is part of a Social Quarter Programme.
The objective was to integrate low-energy and environmental criteria into the
future design of urban areas. The main interest in this project was to improve
the environmental efficiency in Grenoble’s urban energy supply systems amongst
others to reduce periodical heavy air pollution.
As most of the existing building stocks are erected before the energy crises,
the energy consumption was remarkably high and a very short payback period for
the energy saving installations is expected. Urban aspects have been improved,
with a new cultural centre and a new tramway line, and all the dwellings have
been retrofitted.
It is the aim to have high level of energy performance, so it was decided to use
solar panels for hot domestic water and photovoltaic panels to cover the
electricity use for ventilation and common light. There is also a total energy
approach concerning commons electricity and heating consumption with insulation.
Still it is the large thermal solar panels on the roof, and the build-in
PV-modules on the facade, which stand out as the most innovative and salient
features of the project.
| Building period: | Work started: October 1996 | |||
| Work finished: June 1999 | ||||
| Monitoring period: | July 1999 - July 2000 | |||
| Monitoring results: | 505 dwellings with a total floor area of 36,696 m2 | |||
| Parameter | Before | Predicted | Monitored | |
| Heat: (kWh/m2) |
135,0 | 125,0 | 115,0 | |
| Electricity: (kWh/m2) |
12,5 | 12,3 | 11,9 | |
| Water: (m3/m2) |
1,7 | 1,7 | 1,7 | |
| Other Results/ archievements | A main effect of the Surieux project has been
that the energy efficiency measures have meant an annual economic saving for
service charges of € 96 per dwelling. The principal lesson learned for OPAC38 relates to the DHW distribution pipes. The existing DHW distribution pipes were working well. Therefore the solar panels were simply added without having a look at the pipes prior to installation. One year after the work ended, fur was discovered in some of the pipes. It would have been easier and cheaper to solve this problem during the work than afterwards. This experience has learned OPAC38 that in the future the pipes are examined and probably have a cleaning treatment prior to installation. The total project reduced the energy need with 180 kWH/DD (degree Day) for heating. |
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Further information:
| Contact Person / Builder | OPAC 38 Mr. Michel Gibert 47, av Marie Reynoard F-38035 Grenoble Cédex 2 Phone: +33 4 7620 5140 E-mail: michel.gibert@opac38.fr www.opac38.fr |
| Local authority | Municipality of Echirolles 1, place de la Libération F-38130 Echirolles Phone: +33 4 7620 6300 e-mail : courrier@ville-echirolles.fr www.ville-echirolles.fr |
| Architects | DUO Ms. Giacometti Centr’alp, 137 rue Mayoussard, F-38430 Moirans Phone: +33 4 7635 1919 Fax: +33 4 7635 1918 |
| Technical consultants | GTI Mr. David 141 rue des Alliés F-38100 Grenoble Phone: +33 4 7670 1262 Fax: +33 4 7621 8666 |
